POLYETHER-IMPRESSION MATERIAL AND METHOD FOR ITS PREPARATION AND USE

摘要

A polyether-impression material comprising components (a) a polyether, which has at least two optionally substituted vinyl- and/or allyl-end groups, (b) an SiH component, (c) a platinum catalyst, and optionally (d) the usual additives characterized in that the SiH-component (b) can be obtained by the reaction of at least a bi- functional, or polyfunctional, e.g., trifunctional, allyl- or vinyl-hydrocarbon compound, the hydrocarbon radical of which, without taking account of the allyl- or vinyl-groups and the optionally present alkylene ether groups, has 6 to 30 C-atom and contains at least one aromatically unsaturated, heterocyclic, or cycloaliphatic ring, with at least one mole per vinyl- or allyl-group of at least a bifunctional, or polyfunctional, e.g., trifunctional, SiH compound of the formula: <IMAGE> or <IMAGE> in which e=0 to 8, g=0 to 8, h=0 to 4 and R4 and R10 are the same or different, and are each H, methyl or ethyl, with the proviso that at least 1 and at the most 5 of R4 to R10 are H, wherein g and h cannot simultaneously be O, and wherein at least the components (b) and (c) lie spatially separated from each other.